. >> president ahmadinejad made no mention of iran's nuclear program. this is likely his last major speech at the u.n. his term of office ends next summer. >>> tonight, more than two weeks after chris stevens was killed at a u.s. consulate in libya, his family is preparing for his funeral. they remembered a son who worked tirelessly to try to make this word a better place. >> a proud mother shared these treasured photos with me today of a little boy who loved life. was a master of disguise, and rarely stopped smiling. >> that was chris. you never saw him without a smile. >> that little boy with the movie star good looks was christopher stevens. he grew up to be theambassador to libya. his mother learned her oldest child was dead. the first u.s. ambassador to be killed since 1979. >> after the first shock, you're just kind of numb and you just do what has to be done. >> we were sitting right here, so at that time, i was really not able to talk, but i did stand up. >> she stood up out of respect for the caller, president obama. she and chris's stepfather